LOW-TEMPERATURE-RESISTANT FLUORINE-CONTAINING ELASTOMER AND PREPARATION METHOD THEREFOR
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United States of America Patent
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Issued Date -
Dec 4, 2014
app pub date -
Aug 27, 2012
filing date -
Dec 29, 2011
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Abandoned
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Abstract
The present invention provides a low-temperature-resistant fluorine-containing elastomer formed through polymerization of the comonomers: 40-80 mol % 1,1-vinylidene fluoride, 2-10 mol % tetrafluoroethylene, 10-30 mol % perfluoro(alkyl vinyl ether), and 1-10 mol % vulcanization monomer. The present invention further provides a preparation method of the fluorine-containing elastomer. In the present invention, on basis of a large number of experiments, the contents of the comonomers of the fluorine-containing elastomer are adjusted, so that the low temperature performance thereof is significantly improved, and the low-temperature retraction temperature TR-10<−40. Moreover, the rate of the volume change of the fluorine-containing elastomer in methanol decreases, and the oil resistance and the solvent resistance are improved, thereby improving the oil resistant performance and solvent resistant performance of the fluorine-containing elastomer.
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